CTA对诊断颈内静脉留置临时导管后功能异常的研究

目的 观察颈内静脉临时导管不同留置时间所引起的深静脉狭窄、闭塞情况。方法 因需解决血管通路问题来我院就诊的患者48例，按照留置导管时间不同分为3组：小于1月组、1～3月组、大于3月组，行CTA检查，观察深静脉情况，同时解决血管通路问题。结果 3组深静脉不同程度狭窄或闭塞发生率分别为75.0%、87.5%、100%，狭窄或闭塞涉及颈内静脉、头臂静脉、上腔静脉，部分患者血管通路耗竭。结论 临时导管留置时间大于1个月，血管狭窄率很高，减少留置导管，尽量缩短留置时间。

Diagnosis of abnormal function of internal jugular vein after temporary catheterization by CTA

Objective To observe the deep venous stenosis and occlusion caused by different indwelling time of the internal jugular venous catheters.Methods A total of 48 patients with vascular access problems were enrolled.According to the different indwelling time of temporary catheter in internal jugular vein,the patients were divided into three groups:group one(less than onemonth),group two(1-3 months)and group three(more than 3 months).All patients were examined by CTA to observe the condition of deep veins and solve the problems of vascular access.Results The incidence rate of deep venous stenosis or occlusion in three groups were 75.0%,87.5%and 100%,respectively.The blood vessels involved the internal jugular vein,the cephalic vein and the superior vena cava.And some patients cannot reestablish the vascular access.Conclusion When the catheter indwelling is more than one month,the vascular stenosis rate is very high.The indwelling catheter should be reduced and the indwelling time should be minimized.